arm64: KVM: Fix decoding of Rt/Rt2 when trapping AArch32 CP accesses
authorMarc Zyngier <marc.zyngier@arm.com>
Thu, 27 Apr 2017 18:06:48 +0000 (19:06 +0100)
committerChristoffer Dall <cdall@linaro.org>
Tue, 2 May 2017 07:53:46 +0000 (09:53 +0200)
commitc667186f1c01ca8970c785888868b7ffd74e51ee
tree39b6ea8b862bc9703ccbc0ef09fd85a4191e61bd
parent1edb632133efb6226b6bef3e7d9fa8c7134ac4e2
arm64: KVM: Fix decoding of Rt/Rt2 when trapping AArch32 CP accesses

Our 32bit CP14/15 handling inherited some of the ARMv7 code for handling
the trapped system registers, completely missing the fact that the
fields for Rt and Rt2 are now 5 bit wide, and not 4...

Let's fix it, and provide an accessor for the most common Rt case.

Cc: stable@vger.kernel.org
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
arch/arm64/include/asm/kvm_emulate.h
arch/arm64/kvm/sys_regs.c